• 한국식품영양과학회지
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• 제28권3호
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• pp.632-637
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• 1999

The purposes of this study is to investigate the effect of Rhus chinensis gall extract on liver function, plasma lipid composition and antioxidant system in the obese rats with high fat diet for seven weeks. Thirty two male rats of Sprague Dawely strain were divided into four groups. they are normal group (basal diet), control group(high fat diet), III group(high fat diet with Rhus chinensis gall extract 25mg/kg body weight per day) and IV group(high fat diet with Rhus chinensis gall extract 250mg/kg body weight per day). Rats in III group and IV group were administered with Rhus chinensis gall extract accordingly. Weight gains showed a tendency to decrease in rat with Rhus chinensis gall extract group but showed no differences among treatment groups. Food intake and Food efficiency ratio were not significantly different among treatment groups. Plasma total cholesterol showed a tendency to decrease in Rhus chinensis gall extract group. HDL cholesterol showed a tendency to decrease in 25mg/kg of Rhus chinensis gall extract group. However, in the 250mg/kg of Rhus chinensis gall extract group, these values showed no significant difference compared to the control group (p<0.05). GPT activities showed no significant difference among treatment groups. GOT activities showed a tendency to decrease in the groups of Rhus chinensis gall extract groups. Lipid peroxide level was significantly higher in control group than those of normal group. In Rhus chinensis gall extract groups, lipid peroxide level showed a tendency to decrease, but glutathione peroxidase activity was progressively increased. Results of our research in this paper show that Rhus chinensis gall extract might improve liver function, antioxidant system and plasma lipid composition in rats with high fat diet.

• 한국식품위생안전성학회지
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• 제20권1호
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• pp.7-12
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• 2005

The purpose of this study was to examine the four week repeated toxicity in Sprague-Dawley rats orally administrated with Rhus-II (water fraction of Rhus Veniciflua). In acute toxicity test, three groups (40 rats of both sex) were administrated different dosages of Rhus-II, 2 g/kg (high dosage group), 1 g/kg, 0.5 g/kg and one group (10 rats of both sex) were received by orally only saline according to the Regulation on Korea Food and Drug Administration, respectively. There was no difference in body weight change, feed intake and water consumption among different dose groups. There was no alteration in relative organ weight by the administration of Rhus-II. No death of abnormal clinical signs was observed during the experimental period. Between the groups orally administered Rhus-II and the control group, there was no statistical significance in urinalysis, hematological test or serum biochemical values. There were no gross findings at final sacrifice. There was no evidence of histopathological alteration mediated by four week treatment with Rhus-II. These results suggest that no observable effect level(NOEL) of the test orally administration was considered to be more than 2g/kg in rats under the conditions employed in this study.

• 한국자원식물학회지
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• 제14권3호
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• pp.220-228
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• 2001

한국에서 자라고 있는 옻나무속 3종의 항산화력을 조사하여 본 결과, 옻나무속 3종의 각 부위별 ethyl acetate 추출물에 대한 항산화능은 개옻나무의 경우 잎과 줄기에서 각각 32, 34 $\mu\textrm{g}$/$m\ell$, 옻나무의 경우 잎과 줄기에서 각각 39,21 $\mu\textrm{g}$/$m\ell$의 활성을 나타내었다. Sephadex LH-20 column chromatography를 이용하여 줄기 부위의 추출물을 12개의 fraction으로 분리하여 항산화능을 측정한 결과, fraction No.3이 가장 높은 항산화 활성을 나타내었으며, 옻나무가 1.5, 붉나무가 1.9, 개옻나무가 2.3 ug/$m\ell$ DPPH가를 나타내었다. 줄기 추출물로부터 2-propenoic acid (Caffeic acid), Benzoic acid (Gallic acid), 7-hydroxy-6- methoxy-2H-1-Benzopyran-2-one (Scopoletin) 등과 같은 phenol계 물질들이 동정되었다. 옻나무속 3종의 부위별 POD 활성 은 잎에 비해 줄기에서 193배 활성이 높게 나타났고 종간에는 붉나무가 0.58 unit/mg protein로 가장 높게 나타났으며 옻나무, 개옻나무 순으로 높게 나타났다. SOD 활성은 옻나무와 붉나무의 잎에 비해 줄기에서 높은 활성이 나타났으나,개옻나무는 잎이 줄기에 비해 25배 높게 나타났다.

• 동아시아식생활학회지
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• 제21권5호
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• pp.677-682
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• 2011

This study explores the antioxidant activities of solvent extracts from Rhus verniciflua, and the results were as follows. Total phenolic compound and flavonoid contents of Rhus verniciflua were $4.32{\pm}0.17$ mg/100 g and $0.16{\pm}0.02$ mg/100 g, respectively. Electron-donating abilities of solvent extracts from Rhus verniciflua proportionally increased with concentration, and ethyl acetate extract ($95.4{\pm}0.4%$) showed higher activity than that of BHT ($93.3{\pm}1.7%$) at a concentration of 1,000 ${\mu}L$/mL. Reducing power of the solvent extracts from Rhus verniciflua was the highest in ethyl acetate extract ($2.45{\pm}0.03$) at a concentration of 1,000 ${\mu}L$/mL. Nitrite scavenging ability of the solvent extracts from Rhus verniciflua (pH 1.2, 1,000 ${\mu}L$/mL) was the highest in ethyl acetate extract ($95.5{\pm}0.7%$). Therefore, ethyl acetate extract from Rhus verniciflua has similar antioxidant activity as that of BHT.

• 한국식품위생안전성학회지
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• 제20권1호
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• pp.18-21
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• 2005

These observations were performed to investigate the safety of the natural herbs (Rhus-II) in respect of genotoxicity. This substance was examined in two in-vitro tests: (1) Salmonella typhimurium reversion assay (Ames test) in strain TA 98, TA 100, TA 1535 and TA 1537, (2) in vitro chromosome aberration test in cultured Chinese hamster ovary (CHO) cells. In the reverse mutation test, Rhus-II did not induced mutagenicity in Salmonella typhimurium reversion assay(Ames test) with or without metabolic activation. In the chromosome aberration assay using CHO cells, there was no increased incidence of structural and numerical aberrations with or without metabolic activation. These results indicated that, the Rhus-II had no genotoxicity.

• Journal of the Korean Wood Science and Technology
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• 제15권3호
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• pp.24-33
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• 1987

This study was executed to investigate scanning electron microscopic characteristics of Korean Rhus lacquer coats. With the unrefined coat, distilled water, sodium hydroxide, acetic acid, ethyl alcohol, cold-check test, and accelerated weathering were performed after refining treatment. These treated lacquer coats were discussed through observation by scanning electron microscope and the obtained results were summarized as follows: 1. Compared with unrefined coat, the refined coat of Korean Rhus lacquer showed more even surface with regular distribution of dispression. 2. Korean Rhus lacquer coat heated at $120^{\circ}C$ for 3 hours revealed no observable difference irrespective of refining and unrefining. 3. Korean Rhus lacquer coat treated by distilled water, sodium hydroxide, acetic acid. ethyl alcohol, cold-check test. and ultraviolet radiation showed significant characteristics compared with untreated coat. Especially. large deformation and checkings were observed by cold-check test and ultraviolet radiation respectively. 4. The Korean Rhus lacquer coat radiated by ultraviolet ray showed 0.11 duller and 1.41 brighter than non-radiated coat through color difference calculator.

• 복식문화연구
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• 제16권1호
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• pp.158-165
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• 2008

The purpose of this study was to investigate the dyeing property and ultraviolet-cut ability on silk 100% and nylon 100% fabrics dyed with Rhus verniciflua extracts. This study was investigated K/S values, surface color, washing fastness, dry cleaning fastness and ultraviolet-cut ability of the silk and nylon fabrics dyed with Rhus verniciflua extracts under the various dyeing conditions. As mordanting were used Tin(II) Chloride dihydrate $(SnCl_2{\cdot}2H_2O)$, Copper(II) sulfate pentahydrate$(CuSO_5{\cdot}5H_2O)$, Iron(II)Chloride$(FeC_2{\cdot}4H_2O)$. pH was adjusted by sodium carbonate$(Na_2CO_3)$ and formic acid(HCOOH). The optimum dyeing temperature, dyeing time, and pH of the silk fabrics dyed with Rhus verniciflua extracts were $90^{\circ}C$, 100min, and in the nylon fabrics were $90^{\circ}C$, 45min. It were colored(munsell value) 6.4Y 7.5/4.1 in the silk fabrics and colored 4.3Y 6.6/5.9 in the nylon fabrics dyed with Rhus verniciflua extracts. Washing fastness and dry-cleaning fastness in the silk and nylon fabrics dyed with mordanting agent improved in $4{\sim}5$ grade. UV-A test showed that nylon fabrics a high rate of 92% with Rhus verniciflua extracts.

• 한국환경복원기술학회지
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• 제18권6호
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• pp.39-49
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• 2015

This study was to evaluate the growth and spatial distribution characteristics of Rhus javanica population. The study was conducted between 2015 January and July at the cut-slope revegetation site in Dae-Ji Mountain. Seeds of native species were sowed on the disturbed cut-slope in 2002. There were 119 vascular plant species 55 families and 94 genera on the cut-slope. Compositae, Rosaceae, and Leguminosae plants were dominant species, which are pioneer species in dry and barren site. Canopy of trees covered 44.1% total area, which was 8.3% increase from 2008. Rhus javanica, main species, dominated all DBH classes except DBH >24cm. Albizzia julibrissin showed high frequency in the 6~17cm DBH class and Salix koreensis was abundant at >12cm. Elaeagnus umbellata, Corylus heterophylla var. heterophylla, Alnus sibirica, and Acer pictum were not observed. Rhus javanica population was the most frequently observed on the south facing cut-slope. The average DBH of Rhus javanica was $7.3({\pm}3.7)cm$ and the average height of them was $5.2({\pm}1.7)m$. Annual average DBH growth was 7.9mm/yr and the maximum growth(12.0mm/yr) was the $3^{rd}$ year. It decreased after $6^{th}$ years. Although Rhus javanica population in the Dae-Ji Mountain was a seed originated plantation, the forest had reverse J shape diameter frequency distribution. It indicated that the forest is uneven-aged forest. The Rhus javanica population was expected to sustain.

• 한국식품위생안전성학회지
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• 제20권1호
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• pp.13-17
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• 2005

The purpose of the present study was to investigate differences in the sensitizing potential of Rhus Veniciflua(Rhus-II), when tested by the guinea pig maximization test(GPMT) and Freund's complete adjuvant test(FCAT) with an identical, intradermal induction concentration. A new grading classification of the sensitization potential is proposed. The GPMT was conducted according to OECD guideline $\#406$, using a multiple-dose design and test results were analysed with logistic regression analysis. During the induction stage, we injected intradermally each three site 0.1 ml(l mg/animal) test material, 0.1 ml complete Freund's adjuvant and 0.lml the test agent emulsified in the adjuvant. 7 days later, we induced weak sensitization with $10\%$ sodium lauryl sulfate(SLS) and applide 1ml(l0mg/animal) test agent topically on the same site and made a tight occlusion. 14 days later we challenged with 1 ml(l 0mg/animal) of test material on the flank and observed ant 24 hours and 48 hours later. The results were also observed $0\%$ at 24 hours challenge. The results observed 48 hours after challenge were the identical. These data indicated that, although Rhus-II is a no contact allergen. It was reported that the skin sensitization by Rhus-II was not detected the skin sensitization in the guinea pig maximization test (GPMT). Consequently, it was confirmed that Rhus-II had no contact allergic sensitization in guinea pig maximization test.

• 대한암한의학회지
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• 제15권1호
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• pp.111-117
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• 2010

Background & Objectives: Colorectal Cancer is 10% of all cancer incidence and the motality from colorectal cancer is nearly 450,000 a year. Since chemopreventive agents from Herbal medicine is hot issue recently, to prove antitumor effecicacy of Rhus vernifciflua STOKES decoction (Chijong-dan), clinical study was carried out. Here we report one patient with colorectal cancer of stage IV. The patient had a colorectal cancer (Stage IV, T4N2M1), lymph node metastases and underwent chemotherapy. Methods: The patient visited Hana oriental medicine Clinic in 2009 and was treated using Chijong-dan for 1 year at Hana Oriental Clinic. Results: Chijongdan showed no side effect during its treatment and tumor size was retarded based on CT scanning. Overall, this case report suggests that Rhus vernifciflua STOKES decoction can be a potent cancer preventive agents for colorectal cancer but it is still required to verify the scientific and clinical evidences for Rhus vernifciflua STOKES decoction (Chijong-dan).